/Engine/Plugins/Importers/USDImporter/Source/USDUtilities/Public/USDConversionUtils.h
Removes any numbered suffix, followed by any number of underscores (e.g. Asset_2, Asset__232_31 or Asset94 all become 'Asset'), making sure the string is kept at least one character long. Returns true if it removed anything.
namespace UsdUtils { bool UsdUtils::RemoveNumberedSuffix ( [FString](API\Runtime\Core\Containers\FString) & Prefix ) }